IOM 2020, Блиц — Задача 20
The Blitz-contest of IOM-2020
Условие
A 600 meter wide river flows directly south at 4 m/s. A small motor boat travels at 5 m/s in still water and points in such a direction so that it will travel directly east relative to the land. The time it takes to cross the river is closest to
- 67 s
- 120 s
- 150 s
- 200 s
- 600 s
Отговори
D
Answer key: D (the fourth listed option, „200 s“).
Решение
Внимание: Непълно решение
The source contains only the answer key, no worked solution.
Answer: D
Оригинал в Архива: iom-2020-blitz-tasks.pdf · официални решения: iom-2020-blitz-answers.pdf